Week 3 Update - HackMD

- [x] Reviewed Mario’s workshop on client nodes https://notes.ethereum.org/@MarioHavel/nodes-workshop, https://github.com/eth-protocol-fellows/cohort-four/issues/95, https://drive.google.com/file/d/1rMVv-2z2sK1l8Ll_U56stTifgUYljZln/view?usp=sharing - [x] Read Ephemery EIP https://github.com/ethereum/EIPs/blob/04369cb50ee6c1894dec868141e8a32e66dc4f16/EIPS/eip-testnet-draft.md - [x] Reached out to Optimism about ephemery - [x] Played with ephemery setup locally! Explored running from CLI following client docs: Geth and Lodestar **Status**: 1. Validating local configuration for Geth and Lodestar client pair, troubleshooting warnings/errors (read down for details). Geth is correctly initialized but Lodestar is not aware of Geth. 2. Continuing to review the existing ephemery work as I start to scope my EPF4 project, noting [issues list](https://github.com/ephemery-testnet/ephemery-resources/issues/1); likely to pursue ephemery project with Lodestar focus, potentially: - [ ] Lodestar generate genesis in client - [ ] Lodestar automated reset in client - [ ] Lodestar add further configuration settings to ephemery-scripts - [ ] other tbd ## Getting going with Ephemery on mac I’m on my Mac, getting the ephemery testnet running locally. Documenting steps here for future reference. ### PART ONE: INSTALLATION **Ephemery** Download the latest Ephemery release from https://github.com/ephemery-testnet/ephemery-genesis/releases (testnet-all.tar.gz) Extract all files with `tar -xzf testnet-all.tar.gz` Next up: download the client pair to run on Ephemery. **Geth (EL)** Verify file is correct on Mac with `md5 geth-darwin-amd64-1.12.0-e501b3b0.tar.gz` This will output an MD5 hash which can be compared to the one provided. Result: `MD5 (geth-darwin-amd64-1.12.0-e501b3b0.tar.gz) = 26d72e758f54dff126702adf50bdfb79` This is the correct result and I can proceed. Extract contents with `tar -xyf geth-darwin-amd64-1.12.0-e501b3b0.tar.gz` **Nethermind (EL)**  https://downloads.nethermind.io/ Verify file is correct on Mac with `md5 nethermind-1.20.1-9f39c0c7-macos-arm64.zip` This will output an MD5 hash which can be compared to the one provided. Result: `MD5 (nethermind-1.20.1-9f39c0c7-macos-arm64.zip) = 23c63520f4aad7a44f256f4eb05d829d` This is the correct result and I can proceed. [Note: can also use sha256 on Mac as follows: `shasum -a 256 nethermind-1.20.1-9f39c0c7-macos-arm64.zip`] **Lodestar (CL)** Lodestar doesn’t provide a prebuilt binary, so we must build from source - see https://chainsafe.github.io/lodestar/install/source/ Note: Lodestar is a monorepo comprising a number of packages, some of which are useful outside of the cli. Clone the repo and cd into the project directory Run `yarn` (note: needs node >= v18.15.0) at root level Then `yarn run build` to build the source code - [ ] Qu: do we care that this is `unstable` branch for Lodestar? The installation guidance refers to `stable`… ### PART 2: CONFIGURATION In the ephemery testnet directory, grab the testnet chainId: `cat genesis.json | head -n 30` This gives the chainId 39438086 We’ll also need to grab some other env vars so let’s make sure the ephemery config is visible in terminal: `cat config.yaml` A shared JWT secret is needed for the execution client and Lodestar to have a secure connection via port 8551. `openssl rand -hex 32 | tr -d "\n" > “/tmp/jwtsecret”` —————— **Initialize Geth** Inside the geth directory, I ran `./geth --datadir ../gethData init ../ephemery/genesis.json` ❗ Must specify datadir at init, or make sure to use the default path when starting geth below otherwise geth will not be correctly initialized ❗ This wrote Geth’s genesis state based on ephemery. Get env_vars from ephemery We can see CHAIN_ID, BOOTNODE_ENR, BOOTNODE_ENODE in this file, among other variables. `cat ephemery/nodevars_env.txt` **Start Geth** See https://github.com/ephemery-testnet/ephemery-scripts/blob/6612411587af1939f306d5605a273de69ea5034e/cloud-config/fullnode-geth-lodestar.yaml#L59C25-L59C145 for help on inputs! [In geth directory] ✅ `./geth --datadir ../gethData --port 30303 --http --http.addr 0.0.0.0 --http.port 8545 --http.api eth,net,personal,web3 --ws --ws.addr 0.0.0.0 --ws.port 8546 --ws.api eth,net,personal,web3 --authrpc.jwtsecret=/tmp/jwtsecret --syncmode=full --bootnodes "enode://0f2c301a9a3f9fa2ccfa362b79552c052905d8c2982f707f46cd29ece5a9e1c14ecd06f4ac951b228f059a43c6284a1a14fce709e8976cac93b50345218bf2e9@135.181.140.168:30343" --networkid 39438086` —————— **Lodestar** https://github.com/ephemery-testnet/ephemery-scripts/blob/6612411587af1939f306d5605a273de69ea5034e/cloud-config/fullnode-geth-lodestar.yaml#L59C25-L59C145 More installation guidance at https://lodestar.chainsafe.io/#install => https://hackmd.io/@philknows/HkROkZW55 https://chainsafe.github.io/lodestar/reference/cli/ https://chainsafe.github.io/lodestar/usage/local/ - Create `.env` **Start Lodestar** [In Lodestar directory] note: uses BOOTNODE_ENR_LIST ✅ `./lodestar beacon --dataDir=../lodestarData --paramsFile=../ephemery/config.yaml --genesisStateFile=../ephemery/genesis.ssz --eth1.depositContractDeployBlock=0 --network.connectToDiscv5Bootnodes=true --discv5=true --eth1=true --eth1.providerUrls=http://localhost:8545 --execution.urls=http://localhost:8551 --rest=true --rest.address=0.0.0.0 --rest.port=4000 --bootnodes="enr:-Iq4QNMYHuJGbnXyBj6FPS2UkOQ-hnxT-mIdNMMr7evR9UYtLemaluorL6J10RoUG1V4iTPTEbl3huijSNs5_ssBWFiGAYhBNHOzgmlkgnY0gmlwhIlKy_CJc2VjcDI1NmsxoQNULnJBzD8Sakd9EufSXhM4rQTIkhKBBTmWVJUtLCp8KoN1ZHCCIyk,enr:-Iq4QIc297-de1P6hznMX2cIdVsQkve9BD9NUsJ7vVQa7eh5UpekA9rLid5A-yLiS3gZwOGugYZPi58x76zNs2cEQFCGAYhBJlTYgmlkgnY0gmlwhEFtmi6Jc2VjcDI1NmsxoQJDyix-IHa_mVwLBEN9NeG8I-RUjNQK_MGxk9OqRQUAtIN1ZHCCIyg,enr:-Ly4QH8GrTqs0XF1UWwg8E6okU8Gs2hXeG-RiMlQ_X0qwVuYe-PxsAU-GAarI2_YknauLRKmj0-wh2pSWC6JqYbQNDYBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpBFv17XQAAQG___________gmlkgnY0gmlwhIe1jKiJc2VjcDI1NmsxoQI9CPbTH3VqDH5KKgLX5w5yXEuYNE8cKIiKBMnIRE1lpohzeW5jbmV0cwCDdGNwgiNQg3VkcIIjUA" --jwt-secret=/tmp/jwtsecret` 🆘 TODO: Fix warnings & errors Geth: runs but with the following warnings even after Lodestar starts ``` WARN [08-05|16:09:08.897] Post-merge network, but no beacon client seen. Please launch one to follow the chain! WARN [08-05|16:24:38.270] Snapshot extension registration failed peer=05180ebe err="peer connected on snap without compatible eth support" ``` Lodestar: runs fine afterwards ``` warn: Initializing from a stale db state vulnerable to long range attacks slot=0, epoch=0, stateRoot=0x3e3e60e1b96cb9ef05c056d4c1ea0d2a6963259616b6b26aa25ce4c1ecfd589e, isWithinWeakSubjectivityPeriod=false warn: Checkpoint sync recommended, please use --help to see checkpoint sync options info: PeerId 16Uiu2HAmUF7JDdnR7x7McUGjCmUseMZTRJ94zKQkYvEuNFVCxEpA, Multiaddrs /ip4/0.0.0.0/tcp/9000 error: Discv5 worker sent enr without tcp multiaddr enr=enr:-Iq4QNMYHuJGbnXyBj6FPS2UkOQ-hnxT-mIdNMMr7evR9UYtLemaluorL6J10RoUG1V4iTPTEbl3huijSNs5_ssBWFiGAYhBNHOzgmlkgnY0gmlwhIlKy_CJc2VjcDI1NmsxoQNULnJBzD8Sakd9EufSXhM4rQTIkhKBBTmWVJUtLCp8KoN1ZHCCIyk error: Discv5 worker sent enr without tcp multiaddr enr=enr:-Iq4QIc297-de1P6hznMX2cIdVsQkve9BD9NUsJ7vVQa7eh5UpekA9rLid5A-yLiS3gZwOGugYZPi58x76zNs2cEQFCGAYhBJlTYgmlkgnY0gmlwhEFtmi6Jc2VjcDI1NmsxoQJDyix-IHa_mVwLBEN9NeG8I-RUjNQK_MGxk9OqRQUAtIN1ZHCCIyg info: Started REST API server address=http://0.0.0.0:4000 warn: REST API server is exposed, ensure untrusted traffic cannot reach this API warn: Low peer count peers=0 info: Searching peers - peers: 0 - slot: 63666 - head: 0 0x8673…3726 - exec-block: valid(0 0x339b…) - finalized: 0x0000…0000:0 info: discv5 worker started peerId=16Uiu2HAmUF7JDdnR7x7McUGjCmUseMZTRJ94zKQkYvEuNFVCxEpA, initialENR=enr:-IO4QDle11ccVU1RFPlsnMDoMhqxBJh_pPxOhhUIqYTslYZ2aLhh3CZ7hhC1dbDanLX7ucllUfS6LIg8hsPWPf2FyZYHgmlkgnY0iXNlY3AyNTZrMaED55zoDXzQ9PUKwD6boCQ67HX1nXMmpyDkvupPA76Gl0uDdGNwgiMog3VkcIIjKA, bindAddr4=/ip4/0.0.0.0/udp/9000 ``` ### NEXT UP **VALIDATOR SERVICE** ❔`./lodestar validator --dataDir=../dataLodestar --paramsFile=../ephemery/config.yaml --server http://localhost:4000 --keystoresDir=/tmp/data-keys/keys --secretsDir=/tmp/data-keys/secrets --graffiti “hol” --suggested-fee-recipient 0x14627ea0e2B27b817DbfF94c3dA383bB73F8C30b` - [ ] Choose suggested fee recipient for local setup